{"schema_version":1,"publisher":"Half on a Double","data_through":"2026-10-02","frequency":"end-of-day","methodology":"market-implied-carry-v1","generation":"market-implied-carry-analytics-20260917T000000Z","canonical_url":"https://halfonadouble.com/stock/GATX","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/GATX.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GATX.json?date=2026-10-02","definitions_url":"https://halfonadouble.com/methodology.md","license_url":"https://halfonadouble.com/terms.md","disclaimer_url":"https://halfonadouble.com/disclaimer.md","symbol":"GATX","page_tier":"B","units":{"prices":"USD per share","open_interest":"option contracts","gamma_exposure":"modeled dollar-delta change per USD 1 underlying move","gamma_exposure_normalized":"modeled gamma exposure per 100,000 open option contracts","distances":"percent of close","forward_outcomes":"close-to-close percent return"},"snapshot":{"close":171.02999877929688,"previous_close":168.8800048828125,"delta_neutral":163.97392570126618,"gamma_neutral":138.08971912201437,"gamma_max":186.503032050636,"total_open_interest":429,"previous_open_interest":404,"listed_contracts":54,"listed_calls":27,"listed_puts":28,"gamma_max_distance_pct":9.046970345422306,"delta_neutral_distance_pct":-4.125634759043703,"gamma_neutral_distance_pct":-19.259942637191852,"open_interest_change_1d_pct":6.188118811881188,"call_open_interest":318,"put_open_interest":111,"put_call_open_interest_ratio":0.3490566037735849,"nearest_expiration_max_pain":180,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":5.244694664518082,"all_expiration_max_pain":180,"net_gamma_exposure":43681.745794893315,"net_gamma_exposure_per_100k_open_interest":10182225.127014758,"gamma_exposure_flip":138.08971912201437,"gamma_exposure_flip_distance_pct":-19.259942637191852,"call_wall":180,"call_wall_distance_pct":5.244694664518082,"put_wall":200,"put_wall_distance_pct":16.938549627242313,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":4147},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.7778,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"GATX","price":171.03,"totalOi":429,"analysisCoverage":0.7778,"avgIvPct":37.4,"ivRank":7.7,"iv52wHighPct":89.04,"iv52wLowPct":33.1,"frontDte":14,"frontAtmIvPct":28.6958,"backAtmIvPct":26.2284,"termPremiumPp":2.4674,"expectedMoveFrontPct":5.62,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":null,"riskReversal30dPp":null,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.349,"putCallOiFrontRatio":0.136,"putCallVolumeFrontRatio":0,"optionVolume":10,"volumeOiRatio":0.02331,"netDeltaNormalized":0.084942,"dealerDeltaNormalized":-0.084918,"gexPer100kOi":17186610.722611,"vannaPer100kOi":466.200466,"charmPer100kOi":-1776223.776224,"weekendDeltaShiftPer100kOi":-5328438.228438,"ivSurfaceRangePp":49.4,"gammaFlipDistancePct":3.514003,"maxPainDistancePct":5.244694,"peakCallDistancePct":null,"peakPutDistancePct":-12.296088},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GATX.json?date=2026-10-02","interpretation":"Catalyst intensity ranks unusual option pricing and activity; it does not identify the event, predict direction or recommend a trade. Directional score summarizes relative positioning under documented model conventions."},"gamma_max_cross_outcomes":[],"missing_value_semantics":"null means unavailable; it never means zero","interpretation":"These are descriptive end-of-day model outputs. Signed GEX uses the published call-positive, put-negative convention and is not observed dealer inventory. None of the fields are live prices, predictions or investment advice."}